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Yes, it's a gimmick, and we've all seen it before on speakers, clocks, etc., but levitation is still magical to behold. The OvRcharge combines magnetic levitation with induction charging for your mobile device. It's available for pre-order via Kickstarter.

To achieve altitude and be able to charge wirelessly, phone requires a special case. that consists of two main parts, electricity receiver from the base and a Magnet to hold its position mid air. so we design ultra thin case to not only protects your investment but to go some levels and also powers it up all at same time. This case has a magnet that will help it to levitate & it also has induction receiver for charging without cables.

Absolutely beautiful dance of a liquid droplet. In scientific terms, an ultrasonic field is used to levitate a drop of liquid. Increasing and decreasing the strength of the field alters the droplet's shape. Here is the scientific paper: "Shape oscillation of a levitated drop in an acoustic ﬁeld," by W. Ran & S. Fredericks (Clemson University, Department of Mechanical Engineering)" (Thanks, Ariel Waldman!)Read the rest

Researching are using sound waves to levitate and move hovering cells, DNA, toothpicks, water droplets, and other small bits of material in different directions. Eventually, the technique could be used for a "lab on a chip" or to transport hazardous or sensitive chemicals or biological materials in the laboratory. Watch the explosion above when sodium and a water droplet collide! ETH Zurich mechanical engineer Dimos Poulikakos and his colleagues reported their results in the new Proceedings of the National Academy of Sciences. From Science News:

To achieve levitation, Poulikakos and colleagues vibrate aluminum blocks about the size of postage stamps up and down, like tiny jackhammers. The rapid buzz kicks up sound waves that sail upward until they hit a Plexiglas reflector and then bounce back down to the blocks.

When these falling waves run into the climbing ones, they can cancel out, creating a low-pressure pocket that can support an object’s weight.

By adjusting vibration rates to control the position of the pocket, the researchers could float particles across a chessboard of the aluminum blocks.